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Showing 1 to 9 of 9 for “"Neel temperature"”.
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Heat Capacity Measurements on Manganese-Dibromide Tetrahydrate Near Its Neel Temperature
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Heat capacity measurements on manganese dibromide tetrahydrate near its Neel temperature
… have been made using the a.c. or oscillating temperature method. These measurements show rounding in a temperature range of about one millidegree at the Neel temperature (2.l2oK). Outside this region the data may be fit by a power law singularity, within the experimental error, with 0.01 < …
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Imaging magnetic order in magneto-structural phases of Mn3O4
… is known to have two distinct phases below the Neel temperature that differ in both structure and magnetic order, including a tetragonal phase with disordered spins, and at lower temperatures, an orthorhombic phase exhibiting long-range commensurate magnetic order. Using a combination of low …
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Antiferromagnetism, ferromagnetism and magnetic phase separation in Bi₂Sr₂O₆â[delta]
… enter an antiferromagnetic (AF) phase with a Neel temperature - 250 K. On the other hand, annealing as-grown crystals in vacuum to reach [delta approx.] 0.25 destroys the AF phase; these samples exhibit predominantly ferromagnetic (FM) behavior with Tc [approx.] 100 K. At intermediate doping, …
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Pressure Tuned Magnetism in d- and f-Electron Materials
… (FM) transition in metallic Fe$_2$P to very low temperature and to a potential QPT. Counter-intuitive broadening of the magnetic hysteresis leading up to the FM-AFM QPT may well be a crucial clue as to the nature of the model needed to understand this phase transition. A sharp increase in the …
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Quasi-elastic resonant x-ray scattering
… multipole transition theory we developed. As temperature increases, the higher order harmonics decrease more rapidly than the lower order harmonics, which can be qualitatively explained by mean-field theory. Just above the Neel temperature, there is weak magnetic scattering which can be …
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Syntheses, Characterizations, and Properties of Suboxides and Layered Titanium-based Pnictide Oxide Superconductors
… to exhibit antiferromagnetic behavior, with the Neel temperature of TN = 8 K. The oxygen interstitial phase, Ce3Si2O0.82 was found to be paramagnetic. This indicates that the introduction of oxygen as interstitial leads to the loss of long range magnetic ordering in Ce3Si2 structure at low …
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Magnon and phonon thermal transport in oxides
… high magnon thermal conductivity even at room temperature. At high temperatures, I observed that the cuprates still have large magnon contribution to its thermal conductivity even at temperatures larger than the bulk Neel temperature. In addition, the crystals with different spin structures …
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Molecular-based magnets constructed from cyanometalate building blocks
… magnets with high magnetic ordering temperatures: they can be easily prepared from well-characterized cyanometalate building blocks, the metal centers are linked covalently into a 3D network, and a wide range of metals with different spin states and oxidation states can be substituted …